SITE INFORMATION AND CORRESPONDENCE

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CaSZ-Closure Summary Page 2 �)aking Underground Fuel Storage Tank P, am III Release and Site Characterization Information (continued) Maximum Documented Contaminant Concentrations --Before and After Cleanup Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water m Before After Before After Before After Before After TPH (Gas) 8100 <.2 <.05 <.05 Xylene 50.5 <.005 <.0005 <.0005 TPH (Diesel) Ethylbenzene <.005 <.0005 <.0005 Benzene .037 <.005 <.0005 <.0005 Oil&Grease Toluene 2.55 <.005 .0006 <.0005 Heavy Metals MTBE Lead 34.1 7 1.5 <.04 Comments: SOIL BEFORE FROM SAMPLE COLLECTED BENEATH THE UST WHEN IT WAS REMOVED. SOIL AFTER FROM PROBES AND MONITORING WELL SOIL SAMPLING. GROUNDWATER BEFORE FROM GEOPROBE GRAB. GROUNDWATER AFTER FROM MONITORING WELL. IV. Closure Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? (YES) Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? (YES) Does corrective action protect public health for current land use? (YES) Site management requirements: NONE Should corrective action be reviewed if land use changes? (YES) Monitoring/Vapor wells decommissioned: (NO) Number Decommissioned: 0 Number retained: 1 List enforcement actions taken: NOR DATED 04/30/96 List enforcement actions rescinded: NONE V. Local Agency Representative Data Name: MARGARET LAGORIO Title: SUPERVISING REHS SITE MITIGATION/LOP UNIT IV Signature: Date: VI. Central Valley Regional Water Quality Control Board (RB) Notification Date Submitted to RB: Response Date: RB Staff: PAT ANDERSON Response: Title: HYDROGEOLOGIST VII. Additional Comments, Data, etc. This document and the related CASE CLOSURE LETTER,Shall be retained by the lead agency as part of the official site file.